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軟題庫 學(xué)習(xí)課程
試卷年份2008年上半年
試題題型【單選題】
試題內(nèi)容

Stack is quite simple. Many computer systems have stacks built into theircircuitry. They also have machine-level instructions to operate the hardwarestack. Stack is （ ）in computer systems.
A、useless
B、not important
C、simple but important
D、too simple to be useful

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